At 5:51AM Station 33 was dispatched to a reported dumpster fire behind a strip mall on rt530. Engine 3301, Engine 3311, and Tanker 3318 responded. Upon arrival, an active fire with extension to the commercial structure was confirmed (Several electric meters and the electrical conduit were involved). The general alarm was subsequently struck and the fire was quickly knocked down. Damage was held to the exterior of the building. Thank you to our mutual aid partners for your assistance in the operation (Sta 67 JBMDL, 32,34,60,20). The scene was subsequently handed over to MPD and the OCFM for an investigation of cause.